31413928243 has 4 divisors (see below), whose sum is σ = 31414338928. Its totient is φ = 31413517560.

The previous prime is 31413928207. The next prime is 31413928283. The reversal of 31413928243 is 34282931413.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 34282931413 = 15359 ⋅2232107.

It is a cyclic number.

It is not a de Polignac number, because 31413928243 - 2²¹ = 31411831091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31413928196 and 31413928205.

It is not an unprimeable number, because it can be changed into a prime (31413928283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52863 + ... + 256168.

It is an arithmetic number, because the mean of its divisors is an integer number (7853584732).

Almost surely, 2^31413928243 is an apocalyptic number.

31413928243 is a deficient number, since it is larger than the sum of its proper divisors (410685).

31413928243 is a wasteful number, since it uses less digits than its factorization.

31413928243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410684.

The product of its digits is 124416, while the sum is 40.

The spelling of 31413928243 in words is "thirty-one billion, four hundred thirteen million, nine hundred twenty-eight thousand, two hundred forty-three".